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Binary compound. A binary compound is a chemical compound that contains exactly two different elements. Examples of binary ionic compounds include calcium chloride (CaCl2), sodium fluoride (NaF), and magnesium oxide (MgO), whilst examples of binary covalent compounds include water (H2O), and sulfur hexafluoride (SF6)
The ion with the smallest number of oxygen atoms has the prefix [hypo- and the suffix -ite. When naming ionic compounds, the postive ion name is given first followed by the name of the negative ion. Example: NaBr: sodium bromide. Binary compounds form the combination of two nonmetals and is composed of molecules.